/////////////////////////////////////////////////////////////////////////////////////////////////
//
//  Tencent is pleased to support the open source community by making tgfx available.
//
//  Copyright (C) 2023 THL A29 Limited, a Tencent company. All rights reserved.
//
//  Licensed under the BSD 3-Clause License (the "License"); you may not use this file except
//  in compliance with the License. You may obtain a copy of the License at
//
//      https://opensource.org/licenses/BSD-3-Clause
//
//  unless required by applicable law or agreed to in writing, software distributed under the
//  license is distributed on an "as is" basis, without warranties or conditions of any kind,
//  either express or implied. see the license for the specific language governing permissions
//  and limitations under the license.
//
/////////////////////////////////////////////////////////////////////////////////////////////////

#include "DeviceSpaceTextureEffect.h"

namespace tgfx {
DeviceSpaceTextureEffect::DeviceSpaceTextureEffect(std::shared_ptr<Texture> texture,
                                                   ImageOrigin deviceOrigin)
    : FragmentProcessor(ClassID()), texture(std::move(texture)) {
  if (deviceOrigin == ImageOrigin::BottomLeft) {
    deviceCoordMatrix.postScale(1, -1);
    deviceCoordMatrix.postTranslate(0, 1);
  }
  auto scale = this->texture->getTextureCoord(static_cast<float>(this->texture->width()),
                                              static_cast<float>(this->texture->height()));
  deviceCoordMatrix.postScale(scale.x, scale.y);
}

bool DeviceSpaceTextureEffect::onIsEqual(const FragmentProcessor& processor) const {
  const auto& that = static_cast<const DeviceSpaceTextureEffect&>(processor);
  return texture == that.texture && deviceCoordMatrix == that.deviceCoordMatrix;
}
}  // namespace tgfx
